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I have installed Bootstrap and the Radix theme, and created a sub-theme, which is all working OK. But I am unable to get some of my twig files to override the base theme twig files...

The file themes/custom/mytheme/templates/page/page.html.twig contains: {% embed '@radix/navbar/navbar.twig' with {

I would like to create a navbar.twig in my subtheme and use that instead of the standard radix one. Changes I make to themes/contrib/radix/src/components/navbar/navbar.twig will show up on my site (as this is what the embed refers to), but changes to themes/custom/mytheme/src/components/navbar/navbar.twig do not.

How can I change that embed line so that it includes the subtheme twig rather than the base? It's some kind of twig namespace? I have not been able to figure out where it is defined.

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  • You can't. Create your own page.html.twig instead and use {% embed '@my_subtheme/navbar/... %} in there.
    – Hudri
    Commented Sep 20, 2019 at 12:48
  • And yes, @radix is a namespace. Drupal provides a Twig @namespace for every theme and every module.
    – Hudri
    Commented Sep 20, 2019 at 12:53
  • @Hudri where is the my_subtheme namespace defined? Because when I change it from radix to mytheme I just get "The website encountered an unexpected error. Please try again later." I have used the directory name (which is "mytheme"), and the name in mytheme.info.yml after name: (which is MyTheme) and neither worked
    – Innovine
    Commented Sep 20, 2019 at 13:01
  • Use the machine name = directory of your subtheme. If your theme's machine name is johndoe, use @johndoe. Only lowercase, digits and underlines are allowed for machine names. The Twig file must be placed below the templates subdir, but do not include templates/ in the embed string
    – Hudri
    Commented Sep 20, 2019 at 13:10
  • I got it now, thanks! You should post as an answer.
    – Innovine
    Commented Sep 20, 2019 at 13:18

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You can't. Create your own page.html.twig instead and use {% embed '@my_subtheme/navbar/... %} in there.

Use the machine name == directory of your subtheme for @my_subtheme. Only lowercase, digits and underlines are allowed for machine names. The Twig file must be placed below the templates subdir, but do not include templates/ in the embed string

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